Análisis Estadístico

Análisis estadístico de

PERÚ : TASA DE DESNUTRICIÓN CRÓNICA EN LA POBLACIÓN ESCOLAR DE 6 A 9 AÑOS DE EDAD,

SEGÚN REGIÓN, PROVINCIA Y DISTRITO, 1999 Y 2005

David

Profesor:

Pedro Javier Pérez Pérez

UNIVERSIDAD NACIONAL DE COLOMBIA – SEDE BOGOTÁ

Facultades de Ingeniería y Ciencias Económicas

Probabilidad y estadística fundamental

Junio 9

2011

Estadística descriptiva

mean sd 0% 25% 50% 75% 100% n

31.47866 15.16789 0 19.92366 32.05763 43.27607 74.07407 503

Shapiro-Wilk normality test

data: Datos$datos

W = 0.9825, p-value = 9.33e-06

Hipótesis nula para 0.0

One Sample t-test

data: Datos$datos

t = 46.5452, df = 502, p-value < 2.2e-16

alternative hypothesis: true mean is not equal to 0

95 percent confidence interval:

30.14993 32.80740

sample estimates:

mean of x

31.47866

Hipótesis nula para 0.05

One Sample t-test

data: Datos$datos

t = 46.4713, df = 502, p-value < 2.2e-16

alternative hypothesis: true mean is not equal to 0.05

95 percent confidence interval:

30.14993 32.80740

sample estimates:

mean of x

31.47866

Hipotesis nula para 0.025

One Sample t-test

data: Datos$datos

t = 46.5083, df = 502, p-value < 2.2e-16

alternative hypothesis: true mean is not equal to 0.025

95 percent confidence interval:

30.14993 32.80740

sample estimates:

mean of x

31.47866

> .cluster <- KMeans(model.matrix(~-1 + datos, Datos), centers = 10, iter.max =

+ 10, num.seeds = 10)

> .cluster$size # Cluster Sizes

[1] 80 55 35 62 6 40 38 80 52 55

> .cluster$centers # Cluster Centroids

datos

1 38.453585

2 53.844862

3 5.560975

4 26.787621

5 69.804525

6 10.094439

7 15.898609

8 45.343815

9 21.136331

10 32.494555

> .cluster$withinss # Within Cluster Sum of Squares

[1] 235.80945 502.03654 142.14484 147.83820 96.61187 71.69105 85.81498

[8] 355.29786 126.17282 121.81888

> .cluster$tot.withinss # Total Within Sum of Squares

[1] 1885.236

> .cluster$betweenss # Between Cluster Sum of Squares

[1] 113607.3

Histograma

Tallos y hojas

stem.leaf(Datos$datos, na.rm=TRUE)

1 | 2: represents 12

leaf unit: 1

n: 503

10 0* | 0222223334

56 0. | 5555556666666777777777777788888888999999999999

89 1* | 000000011111111222233334444444444

126 1. | 5555566666677777777777888888999999999

174 2* | 000000000001111111111112222222333333333444444444

227 2. | 55555555555566666666667777777777777777888888888899999

(52) 3* | 0000000000011111111111122222222222233333333344444444

224 3. | 5555555555566666666677777777777777777778888888888888888889999

163 4* | 0000000000000000111111122222222223333333333444444444444444444

102 4. | 5555555555555556666666666888888888888999999

...